Electronic safety apparatus consisting of a sensor that detects patches worn by other hunters and warns the user not to shoot being parts and fittings for firearms, firearms with safety alert apparatus built in, rifles, firearms, hunting firearms, guns for hunting, weapons such as bows, compound bows and crossbows, scopes for firearms, air pistols, air guns, air rifles, gun mounts, gun parts, firearm accessory clamps, firearm sights, sporting firearms, police firearms, military firearms, small arms, small bore firearms.